Research Initiation: Adaptive Detection of Targets in an Ocean Environment Using Frequency and Polarization Diversity(Women/Minority Supplement)

研究发起：利用频率和极化分集自适应检测海洋环境中的目标（女性/少数族裔补充）

• 批准号: 8910281
• 负责人: R. Raghavan
• 金额: --
• 依托单位: Northeastern University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1989
• 资助国家: 美国
• 起止时间: 1989-08-15 至 1992-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8910281&HistoricalAwards=false
• 关键词: Research; Initiation; Adaptive; Detection; Targets

This Research Initiation Award is to develop a new approach for detecting targets on the ocean surface using microwave radars with frequency and polarization diversity. In the proposed approach, received signals from resolution cells lying adjacent to a given cell are processed adaptively to obtain relevant information about the spatial structure of the ocean surface. This information is used to implement a detection strategy which maximizes the contrast between the target and the background medium. An investigation of various theoretical aspects of the problem along with its testing will be conducted. The application of the proposed concept to other problems and the impact of the proposed work are discussed. Over two decades of research in the area of microwave remote sensing of the ocean has established the strong connection between the characteristics of microwave sea echo and the physical characteristics of the ocean surface. Improvements in the performance of high resolution radar systems operating in an ocean environment can only be achieved by recognizing this dynamic link between the statistical characteristics of microwave clutter and that of the ocean waves. The research is an attempt at solving this problem by unifying ideas from three different disciplines of research (viz., detection and estimation theory, scattering of electromagnetic waves from rough surfaces and oceanography). This represents a new approach to the problem and results from this work as well as its theoretical aspects are expected to generate a good deal of interest in the scientific community.

本研究启动奖旨在开发一种利用频率和极化分集的微波雷达探测海面目标的新方法。在该方法中，从相邻的分辨率单元接收到的信号进行自适应处理，以获得有关海洋表面空间结构的相关信息。该信息用于实现一种检测策略，该策略最大限度地提高目标和背景介质之间的对比度。将对该问题的各个理论方面进行调查，并进行测试。讨论了所提出的概念在其他问题上的应用以及所提出的工作的影响。经过20多年的海洋微波遥感研究，微波海回波特征与海洋表面物理特征之间存在着很强的联系。只有认识到微波杂波统计特性与海浪统计特性之间的这种动态联系，才能提高在海洋环境中工作的高分辨率雷达系统的性能。这项研究试图通过统一三个不同研究学科（即探测和估计理论、粗糙表面电磁波散射和海洋学）的思想来解决这个问题。这代表了解决这个问题的一种新方法，这项工作的结果及其理论方面预计将在科学界引起很大的兴趣。